Journal
JOURNAL OF HYDRODYNAMICS
Volume 20, Issue 5, Pages 537-546Publisher
SPRINGER
DOI: 10.1016/S1001-6058(08)60092-X
Keywords
floating bridge; analytical model; moving load; water depth
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Funding
- National Natural Science Foundation of China [50379026]
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There are two types of floating bridge such as discrete-pontoon floating bridges and continuous-pontoon floating bridges. Analytical models of both floating bridges subjected by moving loads are presented to study the dynamic responses with hydrodynamic influence coefficients for different water depths. The beam theory and potential theory are introduced to produce the models. The hydrodynamic coefficients and dynamic responses of bridges are evaluated by the boundary clement method and by the Galerkin method of weighted residuals, respectively. Considering Causal relationship between the frequencies of the oscillation of floating bridges and the added mass coefficients, an iteration method is introduced to compute hydrodynamic frequencies. The results indicate that water depth has little influence upon the dynamic responses of both types of floating bridges, so that the effect of water depth can be neglected during the course of designing floating bridges.
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